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# android.bluetooth

Provides classes that manage Bluetooth functionality, such as scanning for devices, connecting with devices, and managing data transfer between devices. The Bluetooth API supports both "Classic Bluetooth" and Bluetooth Low Energy.

For more information about Classic Bluetooth, see the Bluetooth guide. For more information about Bluetooth Low Energy, see the Bluetooth Low Energy (BLE) guide.

The Bluetooth APIs let applications:

- Scan for other Bluetooth devices (including BLE devices).
- Query the local Bluetooth adapter for paired Bluetooth devices.
- Establish RFCOMM channels/sockets.
- Connect to specified sockets on other devices.
- Transfer data to and from other devices.
- Communicate with BLE devices, such as proximity sensors, heart rate monitors, fitness devices, and so on.
- Act as a GATT client or a GATT server (BLE).

To perform Bluetooth communication using these APIs, an application must declare the `BLUETOOTH` permission. Some additional functionality, such as requesting device discovery, also requires the `BLUETOOTH_ADMIN` permission.

Note: Not all Android-powered devices provide Bluetooth functionality.

## Interfaces

BluetoothAdapter.LeScanCallback | Callback interface used to deliver LE scan results.
BluetoothProfile | Public APIs for the Bluetooth Profiles.
BluetoothProfile.ServiceListener | An interface for notifying BluetoothProfile IPC clients when they have been connected or disconnected to the service.

## Classes

BluetoothA2dp | This class provides the public APIs to control the Bluetooth A2DP profile.
BluetoothAdapter | Represents the local device Bluetooth adapter.
BluetoothAssignedNumbers | Bluetooth Assigned Numbers.
BluetoothClass | Represents a Bluetooth class, which describes general characteristics and capabilities of a device.
BluetoothClass.Device | Defines all device class constants.
BluetoothClass.Device.Major | Defines all major device class constants.
BluetoothClass.Service | Defines all service class constants.
BluetoothDevice | Represents a remote Bluetooth device.
BluetoothGatt | Public API for the Bluetooth GATT Profile.
BluetoothGattCallback | This abstract class is used to implement `BluetoothGatt` callbacks.
BluetoothGattCharacteristic | Represents a Bluetooth GATT Characteristic A GATT characteristic is a basic data element used to construct a GATT service, `BluetoothGattService`.
BluetoothGattDescriptor | Represents a Bluetooth GATT Descriptor GATT Descriptors contain additional information and attributes of a GATT characteristic, `BluetoothGattCharacteristic`.
BluetoothGattServer | Public API for the Bluetooth GATT Profile server role.
BluetoothGattServerCallback | This abstract class is used to implement `BluetoothGattServer` callbacks.
BluetoothGattService | Represents a Bluetooth GATT Service Gatt Service contains a collection of `BluetoothGattCharacteristic`, as well as referenced services.
BluetoothHeadset | Public API for controlling the Bluetooth Headset Service.
BluetoothHealth | This class is deprecated. Health Device Profile (HDP) and MCAP protocol are no longer used. New apps should use Bluetooth Low Energy based solutions such as `BluetoothGatt`, `BluetoothAdapter#listenUsingL2capChannel()`, or `BluetoothDevice#createL2capChannel(int)`
BluetoothHealthAppConfiguration | This class is deprecated. Health Device Profile (HDP) and MCAP protocol are no longer used. New apps should use Bluetooth Low Energy based solutions such as `BluetoothGatt`, `BluetoothAdapter#listenUsingL2capChannel()`, or `BluetoothDevice#createL2capChannel(int)`
BluetoothHealthCallback | This class is deprecated. Health Device Profile (HDP) and MCAP protocol are no longer used. New apps should use Bluetooth Low Energy based solutions such as `BluetoothGatt`, `BluetoothAdapter#listenUsingL2capChannel()`, or `BluetoothDevice#createL2capChannel(int)`
BluetoothHearingAid | This class provides the public APIs to control the Hearing Aid profile.
BluetoothHidDevice | Provides the public APIs to control the Bluetooth HID Device profile.
BluetoothHidDevice.Callback | The template class that applications use to call callback functions on events from the HID host.
BluetoothHidDeviceAppQosSettings | Represents the Quality of Service (QoS) settings for a Bluetooth HID Device application.
BluetoothHidDeviceAppSdpSettings | Represents the Service Discovery Protocol (SDP) settings for a Bluetooth HID Device application.
BluetoothManager | High level manager used to obtain an instance of an `BluetoothAdapter` and to conduct overall Bluetooth Management.
BluetoothServerSocket | A listening Bluetooth socket.
BluetoothSocket | A connected or connecting Bluetooth socket.

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